Ethanolamine salts of di-perfluoroalkyl group containing acids

Abstract

Ammonium and amine salts of acids having the formula ##STR1## wherein R f is a perfluoroalkyl group; R 1 is alkylene or substituted alkylene; X is --S--, --SO--, or --SO 2 --; R 2 is hydrogen, alkyl, aryl, substituted aryl, --B--COOH or a --B--COO anion; B is a covalent bond, arylene or alkylene; Z is the ammonium or amine cation; p is the anionic charge, q is the cationic charge; and p 1 and q 1 are the balanced mole equivalents respectively, are provided. These salts applied in the form of aqueous dispersions or emulsions, are useful in rendering cellulosic and natural and synthetic polyamide materials oil and water repellent.

What is claimed is: 
     
       1. A compound of the formula ##STR38## wherein R f  is perfluoroalkyl of 6 to 14 carbon atoms; R 1  is straight or branched chain alkylene of 2 to 8 carbon atoms;   X is --S-- or --SO 2  --;   R 2  is hydrogen or alkyl of 1 to 4 carbon atoms;   B is a covalent bond or alkylene of 1 to 6 carbon atoms; and   Z is the cation of mono-, di-, or tri-ethanolamine.   
     
     
       2. A compound according to claim 1 wherein R f  is perfluoroalkyl of 6 to 12 carbon atoms, R 1  is alkylene of 2 to 4 carbon atoms, and R 2  is hydrogen or alkyl of 1 to 2 carbon atoms. 
     
     
       3. A compound according to claim 1 wherein Z is the cation of diethanolamine. 
     
     
       4. A compound according to claim 2 wherein Z is the cation of diethanolamine.